Listing calculator



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LISTING CALCULATOR Filed Aug. 7, 1942 6 Sheets-Sheet l Fiel- Lokme RCEosMau,

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LISTING CALCULATOR Filed Aug. 7, 1942 6 Sheets-Sheet 3 gwvmvfo'n Lemme P. Cacsmu,

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LISTING CALCULATOR Filed Aug. 7 1942 6 Sheets-Sheet 4 Fici.4.

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LISTING CALCULATOR Filed Aug. '7, 1942 6 Sheets-Sheet 5 II'IIIIIIIIII'II'I arwa/wrom Lemme P. CEQSMAN, wm w dm.

May 315, 1945. P. CROSMAN 2,375,976 I LISTING CALCULATOR Filed Aug. '7, 1942 6 Sheets-Sheet 6 Lsama Caosmma Patented May 155,. 1945 STATES PATENT OFFICE 2,375,976 LISTINGICALCULATOR Loring Pickering Crosman, South Orange, N. J

assignor to Monroe Calculating Machine Company, Orange, N. J a corporation of Delaware 1942, Serial No. 454,025

Application August 7,

3 Claims.

January 8, 1941, patented June 8, 1943, No.

2,321,014. Another object is to provide the machine with an improved front-feed paper guide having pressure rolls engaging the platen to feed a paper sheet thereover in rotation of the platen. Otherobjects and advantages will appear hereinaiter.

The invention consists in the novel construction and combinations of parts as hereinafter set forth in the claims.

In the accompanying drawings,

Figure 1 is a section of the invention as applied. upon the line li, Figure 2.

Figure 2 is a front elevation of the invention as applied, with parts removed and parts broken away.

Figure 3 is a right side elevation of the machine showing the invention as applied, parts being broken away.

Figure 4 is a left side elevation of the same.

Figure 5 is a detail top plan of the carriage, with parts broken away.

Figure 6 is a section on the line 6-6, Figure 5 on an enlarged scale, parts being broken away.

Figure 7 is a detail perspective view of one of the paper edge guides.

Figure 8 is a detail perspective view of the depending plate of said guide.

Figure 9 is a detail perspective view of the right hand carrier member for the wire line finder.

The invention is shown as applied to a Monroe listing calculator, such for instance as disclosed in my Patent No. 1,946,572, dated February 13, 1934, modified in accord with the disclosure of my co-pending application for Patent Serial Number 421,803, filed December 5, 1941, patented June. 29, 1943, No. 2,323,205.

In the drawings, the numeral l designates a shiftable carriage having mounted thereon a rotatable platen 2, provided with means to be described ior rotating the same and yieldably retaining the platen in position as rotated.

A front-feed paper guide includes a plurality of separate spring-metal'plates 3. each of which at the lower end thereof i rigidly secured to a transverse shaft 5 having rotary bearings in the carriage end frames and at the upper end there of is provided with a pressure roll 4 engaging the platen ,to feed a paper sheet thereover in rotation of the platen. Means are provided for adjusting said shaft 5 rotatably in its carriage end frame bearingsand for holding the adjustment to vary the pressure of the said rolls 4 upon the platen including identical U-form clamps 6 upon said shaft having bolts 5' upon loosening which said adjustment may be accomplished, whereupon the bolts are tightened to hold the adjustment.

A combined paper hold back and line finder wire 1 extends the full length of the platen and has normal raised position to hold back the paper sheet, manipulable means to be now described being provided as disclosed in my, aforesaid copending application for Patent Serial Number 373,676 with certain structural modifications, for locking said front-feed paper guide in normal position; for disabling said locking means andposition, and for disabling the last named locking means, conjointly restoring the parts to normal position and rendering again effective the first named locking means.

Inasmuch as the paper hold back and line finder Wire and the front-feed paper guide both extend the, full length of the platen, the manipulable means referred to embodies parts protinuous and flexible and is made fast at one end thereof to one of said carrier members by insertion of the knotted end of the wire within a diametric notch of stud. ll of said member; thence extending the full length of the platen to provide one wire stretch, around a pulley l2 of the other carrier member to form a bend in the wire; thence extending reversely the full length of the platen to provide a second wire stretch parallel to and spaced from the first wire stretch, around a pulley l3 of the first named-carrier member to form another bend in the wire; the

wire thence extending rearwardly around a stud whereby manipulation of said upper paper guide will displace both of said evers 8, both carrier members Ill and the paper hold back and line finder wire I therewith. The upper paper guide I5 is spaced rearwardly from the paper hold back and line finder wire I by an interval a', admitting of passage of the paper sheet 8" forwardly of said upper paper guide, through said interval and rearwardly of said wire 1 between the same and the platen 2, thereby providing for full visibility of the upper portion of the paper sheet on and above the printing line,

Right and left right-angle edge guides I! for,

the paper sheet are mounted upon the upper paper guide l5 and are adjustable thereal'ong slidably. The body of each of said edge guides has a hooked forward end [8 fitting over the'forward edge portion of said upper paper guide, and rear end slots l9 engaged by angularly bent lugs 10 of the upper end of a depending plate 2|, said lugs resting upon the top surface of the edge guide body and coiled springs .22 connecting the lower end of said depending plate with said forward hooked end I! to yleldabl 'hold the edge guide down to the paper guide.

The front-feed paper guide 3 is ll of which is pivoted at'its upper portion at H to the platen carriage frame and'the lower member I!" of which has pivotal connection '13 with the tail arm ll of U-form clamp 6 (considered as a lever), coiled spring l5 connecting joint member l2 and an extension of clamp i and being normally tensioned to hold joint member l in stop engagement with transverse brace rod ll" connecting the carriage end frames and the joint members aligned to prevent the bowing thereof in one direction, said bowing serving to further tension said spring I! and to displace said front-feed paper guide tfropen position with its pressure rolls spaced from the platen as will beexplained.

Each lever 8 is fulcrumed at H to a sector is loosely mounted upon the platen shaft 1' and held innormal position by a coiled ispring I95 'tending to rotate thesector clockwise trigger,

and stop lug 2." with which a projection ll' of the sector contacts. The lower arm of'each'lever I its upper edge concentric with the platen shaft and of greater radius than that of and.

spaced from the arcuate edge of the. related sector byan arcuate space 23 withinzand at one end of which said stop lug II" is normally 10-- cated. Thus the lower-arm of normally posi-' tioned lever O has stop engagement with'said lug I will be moved hodily'asa unit with's'ectors ll 15, extending the full' locked in normal position by a toggle joint, the upper member uponthe platen shaft as a center against the tension of springs I! to bring the paper hold back and line finder wire I downwardly to the printing line, which is the point A of the dot and dash line of Fig. 6, but only temporarily as will be explained. The lug II" is a lateral lug of a member 24' of a second toggl joint pivoted at 25' to the platen carriage frame, the other member 26' of said joint being pivoted at 21' to the upper membervlfl' of the first named toggle joint. The above stated forward manipulation of the upper paper guide movesthe right and left duplicate levers} and the sectors l8. as a unit therewith a distance substantially measuredby 15 the length of the arcuate space723', this unitary movement being stopped by contact of the forward walls of the radial arcuate notches 29' (concentric with fulcrums ll), of said sectors with the lugs atwhich time thelrespectiveful- 20 crums ll of the levers 8 will become aligned with'the respective pivots of,the members 24 of said second toggle joints, and pivotal movement of the levers 8 upon their fulcrums then taking place as a consequence of continued for- 25 ward manipulation of the upper paper'guide l5,

thefollowing will take placez. v; Y

The paper hold back and line finder wire 1 will be brought fartherdownw'ardly to the point B of the dot and dash line of .Fig. 6, in an arcuate 30 path away from the platen and the printing line from fulcrum H as a center and the'luss 20" will be moved within the notches 29' of the sectors againstthe inner ends of the notches as a stop, thereby actuating joint members 24 to bow the first named toggle joints and disable the lock thereof for holding. the front-feeds paper guide in normal position; displacing said front-feed paper guide to open position wherein its pressure rolls will be spaced from the platen and aligning the members of each of said second toggle joints to lock the front-feed paper guide in open posi- A tion and to lock the sectors II as moved to prevent the return of the levers 8 and of the paper hold. back and line finder wire r'l to normal position.

' In aligning the members of each of said second toggle joints. the outer arms'll of the members 26' of said joints (considered as levers), which outer arms are at their outer ends rigidly connected by cross rod 3|, willbe' brought to and set in position for movement inunison upon menin'ulation of said cross rod.

The parts being in the positions above stated, and a paper sheet or sheets 8''- with or without carbOnsheetsbein'g inserted in the machine forwardly of the upper paper guide II and of the platen, through the. interval I, rearwardly of the paper hold back and line finder wire I now spaced from. theplaten; and rearwardly of the frontieed'paperguide and its pressure rolls also now spaced from, the platen, to approximately correct position and pressed by the operator with the .thumbsof both hands rearwardly against the upper paper guide ll, will'pause reversemovementot, the {duplicate levers I upon their fuli finder I back to the pointA "of the dot and dash line or me. a into closgproxhhityto the platen at the correct heighttoshow or find the 7 ipr inting line uponthe paper sheet; At this point the free ends of the rear, offthe duplicate levers I, which ends are'slightly hooked ss'sholm. will contactone side and a corner of the duplicate stops 32', .whichs'tops are the squared heads oi the pivots l l" of the upper members or the toggle crums and bring the .paper' hold back and line' I arigidunit.

nicely to the printing line and while holding the paper in this position against the upper paper guide by his thumbs the operator will with certain of the fingers of both hands push forwardly upon the cross rod 3| which is within convenient reach andhas been previously adjusted to and set in position for manipulation as stated. This will bow said second toggle joints and disable the lock thereof for holdingthe frontfeed paper guide in open position, whereupon the tensioned springs 99' will restorethe parts to normal position, with exception of the levers 8, which are still manually held in engagement with said stops as stated and sectors l8 upon which said levers are mounted and which are similarly held.

The paper sheet being thus properly adjusted to the printing line and so held by the normally positioned pressure rolls of the front-feed paper guide, the operator naturally releases his thumb pressure upon the paper sheet and the upper paper guide 85, whereupon the tensioned springs 59' will restore the sectors l8 and the levers 8 with the paper hold-back and line finder wire I as. a unit to normal position, wherein as aforesaid said wire is raised to form. a hold back for the paper sheet.

The upper paper guide l5 may be provided with a tear-off or knife edge for use with a paper tape. 1

The parallel stretches of the paper hold back and line finder wire I are spaced apart similarly tothe printed lines on the paper sheet, for use in aligning to print on the same line in ordinary work and to print on the next line below in ledger and statement work upon a single operation of said manipulable means for displacing said wire downwardly for line finding purposes.

The points C and D (Fig, 6), have the same significance with respect to the lower stretch of the combined paper hold back and line finder a V which seats fit projections 34 of the machine frame endsn Other projections .35 of the machine frame endsfit within perforation seats of said connecting member. The upper and lower spaced channel bars include each a rectangular cover plate 35, detachablybolted to the forwardly bent flanges 33 at 31. The bearing between the upper and lower channel bars of the stationary main frame and the upper andlower rails of the carv riage is claimed in the divisional application for patent, Serial Number 495,324, filed July 19, 1943. Upper and lower adjustable hooks 39 have bolt connection 40 with the stationary machine frame, arcuate slots 42 of said hooks being engaged by said bolts which work therein. These upper and lower hooks are engaged with registering perforations or eyes of the cover. plates 36 and the forwardly bent flanges 33'. The detachable connection between the main frame and the unit comprising the upper and lower channel bars'and their connecting member is claimed in the. di-

' visional application No. 524,'756,'fi1ed .March 2,

wire 5 as have the points A and B of said figure with respect to the upper stretch of said wire.

Upper and lower spaced rails 23 of the carriage have opposite upper and lower tracks 24 and each opposite lateral tracks 25, upper and lower stationary spaced channel bars 26 of the stationary ,main frame having opposite upper and lower tracks and each opposite lateral tracks spaced from those of said rails. Upper and lower antifriction means are located between said tracks.

The upper and lower rails 23 fit at their endsv within notches 8| of the carriage end frames,

hold the latter securely against brace 32 to form The upper andlower stationary spaced channel bars 26 extend at both end portions thereof beyond' the stationary machine frame for better support of a long carriage and have a connecting member 28 rigidly secured thereto by bolts 3! provided with upper and lower forwardly bent fianges 33", thereby providing seats 33 within A line spacing pawl ill is pivotedat 53 to one arm of a bell crank 85, the latter being fast to rock shaft t5 having bearings in the carriage. end frames, 3, bell crank .46 being fast to the opposite end of said shaft, :these bell cranks having-forward extending arms 14! connected at their forward ends by a cross bar 48 so that movement is transmitted from one bell crank to the other and both bell cranks and said cross bar work as. a unit. A spring 49 connected to the tail arm of bell crank 46 normally tensions said unit 'downwardly against a stop 53 to be described, whereby said cross bar is normally positioned at the upper end of a passage 53 located between the tubular brace 32 and'the connecting member 26 of the channel bar unit. The line spacing pawl is maintained in normal position by means of a spring device 5|, tending to yieldably maintain a fixed distance between a stud 42' of said pawl and a stud 447 of bell crank 441. with "which studs said with the ratchet wheel 52 against tension of said spring device and will be restored to normal position by said spring device upon release ofv said ,roller'arm. The line spacing pawl being rocked by' said roller arm in an are about shaft 45 as acenter into engagement with said ratchet wheel, the pawl 'will ride over one or more teeth of said ratchet wheel during theforward stroke of the machine in accord'with the'setting of a lever 53. During the return stroke of the machine, the bell cranks M and 48 and the cross bar 48 are rocked as a unit reversely, thus line spacing the 'platen. The lever 53 is adjustable to engage itstooth. 53' with either of three notches 5! of an arm- 55 pivoted at 58 and urged downwardly by spring 5'! to maintain the tooth and notch engagement, the bell crank "being tensioned downwardlyby its spring to engage either of two stepsAG thereof cranks l4 and I3 and the cross bar 43 workin fas a unit may be varied to vary the line spacing.

, At the extreme end of the retum'stroke of: the

' machine said bell cranks and cross bar working as a unit will be given a short movement to release the line spaclngpawl from the ratchet wheel, whereupo'nsaid spring device 5| will act to retract the bell cranks 44 and 46 and said cross bar as aunitaswellasthelinespacingpawltonormal device downwardly for line'flnding purposes and for restoring the same to normal position; said.

position so thatthe platen may be rotated by the u use of the twirler knob. The usual spring-urged detent it has aroller l! engagin the ratchet wheel to yieldably maintain the platen in adjusted position. Y

Means are provided for stopping the shiitable carriage in predetermined columnar positions in tabulating operations upon successive manipulation of a tabulating lever 60 and shifting oi the carriage including a continuous series of tabu manipulable means including right and left spaced levers and said paper hold back and lating stopstl loosely mounted upon a shalt l2,

which stops are contiguous, manipulable means being provided for slightly rotatingthe stops 6| upon said shaft for setting purposes including a setting lever 63, all as'iully disclosed in my aforesaid co-pending application for patent Serial Number 421 ,803. t

I claim: 1. In a machine of the class described, having line finder device including right and left spaced carrier members andtwo parallel wire stretches mounted upon said carrier members and spaced apart similarly to the printed lines on the paper sheet for use in-aligning to print on the same line in ordinary work and to print on the line next below in ledger and statement, work upon a single operation of said manipulable means ior displacing said device downwardly 101: line finding purposes, said carrier members having adjustable means of connection with said levers for proper positioning oi said wire stretches.

3. In a, machine of the class described havin a rotatable platen, a front-feed paper guide hava rotatable platen, a front teed paper guide havl ing pressure rolls engaging the platen to feed a paper sheet thereover in rotation of the platen,

a combined paper hold back and line ilnde'r'wire device extending the full length of the platen having normal raised position to hold back the paper sheet, and manipulable means for displac ing said device downwardly for line finding pur-. poses and-.ior restoring the same to normal position; said paper hold back and line finder wire device including two parallelwire stretches spaced apart similarly to theprinted lines on the paper sheet-ioruse in aligning to print on the same line in ordinary work and to print on the next line below in ledger and statement work upon a single operation of said means for displacing said device downwardly for line finding'purposes.

2. In a machine of the class described, having a rotatable'platen, a iront feed paper guide hav- 1 ing pressure rolls engaging the platen to feed a paper sheet thereover in rotation of the platen,

a-combined paper hold back and line .flnder device extending the full length oi the platenhaving normal raised position to hold back the paper sheet,.and manipulablemeans i'or displacing said ing pressure rolls en aging the platen to feed a paper sheet thereover in rotation of the platen, a combined paper hold back and line finder device extending the iull length of the platen having normal raised position to hold back the paper pulleys and two parallel stretches spaced apart/ similarly to the printed lines on the paper sheet for use in aligning to print on the same line in ordinary work and to print on the line next below 1 in ledger and statement work upon asingle operation of said manipulable means for displacing said-device downwardly for line finding purposes, said carrier members having adjustable means of connection with said levers for proper positioning oi said wire stretches, said wire being secured at one'end thereof to'one of said end pulleys and at its other endbeing provided with a tensioning spring connection with the platen carriage irame.

' LORING PICKERING CROSMAN. 

